UE (200) performs Asymmetric ROHC that applies header compression in a packet data convergence protocol layer to either an uplink or a downlink. The UE (200) includes a data transmitting-receiving unit (220) that receives from eNB a support notification indicating that the Asymmetric ROHC is supported and a capability notifying unit (240) that notifies, when the data transmitting-receiving unit (220) receives the support notification, the eNB of information to be used for setting the Asymmetric ROHC by including a profile of the Asymmetric ROHC in capability information of the UE (200).
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1. A radio communication device comprising: a receiver that receives from an opposing radio communication device a capability information of the opposing radio communication device including a profile of asymmetric header compression and a number of sessions usable for header compression, the profile of the asymmetric header compression being a RObust Header Compression (ROHC) supported in uplink-only ROHC operation by the opposing radio communication device; and a processor that recognizes support of the asymmetric header compression by the opposing radio communication device based on the received capability information, wherein the radio communication device performs the asymmetric header compression in which the header compression being the ROHC is applied in a packet data convergence protocol layer to either an uplink or a downlink, and wherein a number of sessions for the header compression applicable to either the uplink or the downlink is based on a number of sessions usable for the header compression.
This invention relates to radio communication devices, specifically addressing the challenge of efficiently compressing packet headers in wireless communication systems. The device includes a receiver that obtains capability information from an opposing radio communication device, which includes details about the opposing device's support for asymmetric header compression and the number of sessions available for header compression. The capability information specifies that the opposing device supports Robust Header Compression (ROHC) in an uplink-only configuration, meaning header compression is applied only in the uplink direction. The device also includes a processor that determines whether the opposing device supports asymmetric header compression based on the received capability information. The radio communication device then performs asymmetric header compression, applying ROHC in the packet data convergence protocol (PDCP) layer to either the uplink or downlink direction. The number of sessions available for header compression in either direction is determined by the number of sessions indicated in the capability information. This approach optimizes bandwidth usage by selectively compressing headers in one direction while maintaining compatibility with the opposing device's capabilities.
2. A radio communication device comprising: a processor coupled to a transmitter that: notifies an opposing radio communication device of capability information of the radio communication device including a profile of asymmetric header compression, the profile of the asymmetric header compression being a Robust Header Compression (ROHC) supported in uplink-only ROHC operation by the opposing radio communication device, and notifies of the capability information including a field indicating contents of symmetric header compression in which header compression is applied in both an uplink and a downlink and a field indicating contents of the asymmetric header compression that is different from the field indicating contents of the symmetric header compression, wherein the radio communication device performs the asymmetric header compression in which the header compression being the ROHC is applied in a packet data convergence protocol layer to either the uplink or the downlink.
This invention relates to radio communication devices, specifically addressing the challenge of efficiently managing header compression in wireless communication systems. The device includes a processor connected to a transmitter that communicates capability information to an opposing radio communication device. This information includes a profile of asymmetric header compression, particularly Robust Header Compression (ROHC) supported in uplink-only operation by the opposing device. The capability information also contains distinct fields: one indicating the contents of symmetric header compression (applied in both uplink and downlink) and another indicating the contents of asymmetric header compression (applied only in uplink or downlink). The device performs asymmetric header compression using ROHC in the packet data convergence protocol (PDCP) layer, applying it to either the uplink or downlink direction. This approach optimizes header compression by allowing flexible configuration based on the capabilities of the communicating devices, improving efficiency in wireless data transmission. The invention ensures compatibility and performance by clearly distinguishing between symmetric and asymmetric compression modes, enabling better resource utilization in wireless networks.
3. A radio communication method implemented on a radio communication device comprising: receiving from an opposing radio communication device a capability information of the opposing radio communication device including a profile of asymmetric header compression and a number of sessions usable for header compression, the profile of the asymmetric header compression being a RObust Header Compression (ROHC) supported in uplink-only ROHC operation by the opposing radio communication device; and recognizing support of the asymmetric header compression by the opposing radio communication device based on the received capability information, wherein the radio communication device performs the asymmetric header compression in which the header compression being the ROHC is applied in a packet data convergence protocol layer to either an uplink or a downlink, and wherein a number of sessions for the header compression applicable to either the uplink or the downlink is based on the number of sessions usable for the header compression.
This invention relates to radio communication methods for optimizing header compression in wireless networks. The problem addressed is the inefficient use of header compression resources in asymmetric communication scenarios, where only one direction (uplink or downlink) requires compression while the other does not. Traditional symmetric header compression methods waste resources when applied to both directions unnecessarily. The method is implemented on a radio communication device, such as a mobile device or base station, and involves receiving capability information from an opposing radio communication device. This information includes a profile indicating support for asymmetric Robust Header Compression (ROHC) in uplink-only operation and the number of sessions usable for header compression. The radio communication device then recognizes the opposing device's support for asymmetric header compression based on this received data. The method applies ROHC in a packet data convergence protocol (PDCP) layer to either the uplink or downlink direction, depending on the communication needs. The number of sessions available for header compression in either direction is determined by the session count provided in the capability information. This approach ensures efficient resource allocation by compressing headers only where needed, reducing overhead and improving network performance. The solution is particularly useful in scenarios where one communication direction has significantly higher data volume or requires lower latency.
4. A radio communication method implemented on a radio communication device comprising: including in capability information of the radio communication device including a profile of asymmetric header compression and a field indicating contents of symmetric header compression in which header compression is applied in both an uplink and a downlink and a field indicating contents of the asymmetric header compression that is different from the field indicating contents of the symmetric header compression, the profile of the asymmetric header compression being a Robust Header Compression (ROHC) supported in uplink-only ROHC operation by an opposing radio communication device; and notifying the opposing radio communication device of the capability information, wherein the radio communication device performs the asymmetric header compression in which the header compression being the ROHC is applied in a packet data convergence protocol layer to either the uplink or the downlink.
This invention relates to radio communication methods for efficiently managing header compression in wireless networks. The problem addressed is optimizing header compression to reduce overhead in packet data transmission while ensuring compatibility between devices. The solution involves a radio communication device that includes specific capability information in its signaling to another device. This capability information includes a profile indicating support for asymmetric header compression, particularly Robust Header Compression (ROHC) in uplink-only operation. Additionally, the information contains fields detailing the contents of symmetric header compression (applied in both uplink and downlink) and asymmetric header compression (applied only in uplink or downlink). The device notifies the opposing device of this capability information. The radio communication device then applies ROHC in the packet data convergence protocol (PDCP) layer to either the uplink or downlink, depending on the compression type specified. This approach allows for flexible and efficient header compression, reducing transmission overhead while maintaining interoperability between devices. The method ensures that the opposing device is aware of the supported compression profiles and their respective configurations, enabling proper communication setup.
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March 14, 2017
February 8, 2022
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